Immunotherapy for lung adenocarcinoma is still effective. Immunotherapy is a brand-new cancer treatment method in recent years, which is also used in the treatment of lung adenocarcinoma. It is mainly used for patients with advanced lung cancer, and the patient’s own anticancer ability is enhanced by immunomodulators, so as to remove the cancer cells in the body, and the overall therapeutic effect is still good, and it can effectively prolong the patient’s survival cycle. However, immunotherapy is not a single treatment for lung adenocarcinoma patients, it needs to be combined with radiotherapy, chemotherapy and other treatments; moreover, not all patients are suitable for immunotherapy, they need to undergo immunohistochemistry examination, and only if the result is positive can they undergo the treatment under the guidance of doctors.